What does it mean?
P1715 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Park/Neutral Position Switch Circuit .
Symptoms
- MIL on
- Engine cranks in gear, or refuses to crank in park and neutral
- Idle speed dipping or flaring when drive is selected
- Reverse lights inoperative or permanently on
- Gear position display in the cluster missing or wrong
- Cruise control or the shift interlock refusing to operate on some vehicles
Likely causes
- Park and neutral position switch worn internally, giving an intermittent or wrong signal
- Open, shorted or high-resistance wiring between the switch and the module
- Corroded or waterlogged switch connector, which sits low and exposed on the transmission
- Switch out of adjustment after clutch, linkage or transmission work
- Broken or stretched shift cable so the switch never reaches its detent
- Poor ground reference for the switch circuit
- Module input circuit fault
How to fix it
- Watch the park and neutral input in live data while shifting slowly through every position
- Inspect and adjust the switch to its detent position where the design allows adjustment
- Check the shift cable or linkage for wear, stretch and correct adjustment
- Clean the connector and check for water and corrosion, then reseat it and protect it
- Test the circuit for continuity and shorts with the switch disconnected
- Bench test the switch contacts in each position with a multimeter
- Replace the switch if the contacts do not make cleanly, and repair harness damage before suspecting the module